13279860 has 144 divisors (see below), whose sum is σ = 46388160. Its totient is φ = 3041280.

The previous prime is 13279853. The next prime is 13279909. The reversal of 13279860 is 6897231.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37444 + ... + 37796.

It is an arithmetic number, because the mean of its divisors is an integer number (322140).

Almost surely, 2^13279860 is an apocalyptic number.

13279860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13279860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23194080).

13279860 is an abundant number, since it is smaller than the sum of its proper divisors (33108300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13279860 is a wasteful number, since it uses less digits than its factorization.

13279860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 13279860 is about 3644.1542228616. The cubic root of 13279860 is about 236.8087973433.

The spelling of 13279860 in words is "thirteen million, two hundred seventy-nine thousand, eight hundred sixty".